Question

Are my answers correct?

Answer 1

12.) what is the equation of the line perpendicular to the line y=4/9x-2 that passes through the point (4,3)?

my answer: y=-9/4x+12?

Answer 2

13.) I have show the steps for this.
Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.

X Y
4 6.4
7 11.2
10 16
13 20.8

Answer 3

my answer: y varies directly with x

means

y= k x
where k is some constant number.

This is one of the simplest equations you will meet.
if you have an (x,y) pair, you can replace the x and y in the equation and solve for k:

for the first entry in your table, you have x=4 and y is 6.4
replace y with 6.4, and x with 4 in y = k x to get
6.4= k * 4
divide both sides by 4:
6.4/4 = k * 4/4
or
k= 6.4/4 = 1.6

so your direct variation equation is
y= 1.6 x
THE ANSWER IS: 1.6?

Answer 4

@Compassionate

Answer 5

@jabez177

Answer 6

hey man are you working on this?

Answer 7

yeah you're right on both